Heat-insulated can.



L. R. STEEL.

HEAT INSULATED CAN. APPLIOMION FILED MARA, 1911.

Patented Dec. 24, 1912A 2 SHEETS-SHEET 1.

L. R. STEEL.

HEAT INSULATED GAN.

APPLICATION HLBD 11,111.4. 1911.

Patented Deo. 24, 1912.

'15s-SHEET SEEE Lennard IZMS'eeZ 2%@ @f4/M410 LEONARD R. STEEL, FCLEVELAND, OHIO.

HEAT-.INSULATED CAN.

Specification of Letters Patent.

Patented Dee. 24,1912.

Application filed March 4, 1911. Serial No. 612,209.-

To all whom 'it may concern.'

'This invention relates to insulated milk cans. v

An object of the invention is to provide an improved construction of canof this character including an outer` double walled jacket filled withinsulating material and an inner vessel of glass, porcelain,. china, or

other non-corrosive material, th e. insulating 'jacket embodyingseparable sections so arranged with respect to each other and with theinner vessel as to insure against movei ment of theinnervessellongitudinally in Yso the jacket.

In the drawings, forming a portion of this specification and in whichlike numerals of` reference indicate similar parts in theseveralviews:-Figure 1 is a vertical section through myimproved can. Fig. 2 isan enlarged view through a portion ol. the same.

vFig. ,3 is a horizontal section on line 3-3 0f Fig. 1. I ig. flis :iview similar to Fig. 1 showing the funnel attachment applied to the neckof the inner vessel.

The can comprises an outer ii'isulatinf T i jacket 1 and an inner vessel2, which latter preferably constructed of glass, porcelain.

china, or other non-corrosive inateri al.- The insulating jacketincludes a lower section 3 and au upper section t which are detachablyconnected with eachother as will be hereinafter fully explained. 'Thelower section embodies an outer wall 5 and an inner wall.

6. The bottom of the inner walll is disposed above the plane of thebottom of the outer jwall yandvcmhracing the sameexteriorly is theflange 7 o'l" an inner bottom .member 8.

`An outer bottom member S) is located beneath the bottom 8 and in spacedrelation thereto and it is f'o'rmed with a depending l outer flange 10which is embraced by the lower yend of the wall The lower end of thelwall-5 is embraced by an exterior clamp- A.ing band 11. The flange 10embraces an innerclamping- -band 12. The hands 11 and `12 and the flange10 are secured to the lower end of the wall 5 by rivets 13. rlhe upperend of the outer wall 5 is disposed below thel plane of the upper endol'` the wall 6, and as illustrated, it is offset inwardly so as to forma peripheral recess 14. Atsubstantially stepped member connects theWalls' 5 and 6 with each other. This member is provided with the upperand lower vertical flanges 15 and4 16 and an intermediate verticalflange 17. The flange 15. is secured to the wall 6', at 18. The lowerflange 161cx tends into the recess 14 and is secured to the offsetportion of the wall 5, by rivets 19. An exteriorly threaded ring 20embraces the flange 15 and is secured thereto by the rivets 18. Asimilar exteriorly threaded ring 21 is secured by rivets to.the flange17. In addition to the rivets 18 and 19 which secures the step edconnecting member with the walls 5 an 6, solder may be used so as toform a perfect air tight joint.

The top section 4 of the insulating jacket includes an inner wall 23 andan outer"wall 24. These walls are connected with each other by themember 2.). This member is stepped and is substai'itially of identicalconfiguration with the hereinbefore describedl stepped connectingmember, and as shown,

it is provided with the veltical flanges 26 and Q7 and the horizontalflanges Q8 and 29. An attaching flange 30 is formed on the member Q5 atthe upper end thereof and secured by rivets 31 to the lower edge of thewall 23. The vertical flange .26 of the member is secured by rivets 32to the Wall 24.

This` wallQfl is formed to provide a horizontal shoulder which isdesigned to rest upon the 'lower horizontal wall 34 of the steppedconnecting member hereinbefore described as connecting the walls 5 and 6with each other. The flange 26 has secured thereto 'an interior-lythreaded ring 35 which is designed for attachment to the ring 21 so asto securely hold the sections fl and 5 closed against each other.V Thewall 93 has secured thereto a vertical collar 36 which is spacedthroughout from a similar collar 37 which is secured to the wall Q4. Thecollar 37 is closed at its top by a cover 38 which is spaced 'from asimilar cover 39 which closes the collar 36 at its upper end. The cover38 is provided with an outwardly flared flange 40 liaviug acircumferential reinforcing bead 41.

The inner vessel .2- is provided adjacent to its upper end with auexternal shoulder 42. A retaining device 43 is interiorly threaded foradjustment on the ring 20. This device is provided with a series ofradial fingers 44 which are designed to engage the shoulder ioe ymembers8 and 9.

l2 of the liner so as to hold the liner against.-

the top or breast of the inner vessel, as

shown in Fig. l.

The neck of the inner vessel is extcriorly screw-threaded and detachablyfit-ted thereto is a cover 46. .et paper disk 47 is located on 'theimderside of the cover which is held against the neck of the inner'vessel when the cover is in its closed position. corel' is provided witha suitable handle 4%. The cover plate 89 of the collar 36 is spaced fromthe cove' 46 oit the inner vessel so as to 'forni a dead air space 49therebetween. .Au insulatingl material of mineral wool, iyood, asbestos,or any other suitable nonheat conducting' body is placed in the spacebetween the Walls and Gand between the walls and 24 and also between theclosure members 38 and 39 and between the ljigottom The bottom 9 1sprovided With an exhaust opening by means of which the air can beexhausted from the insulating material and from the space between theWalls 5 and 6 and the bottom members S and 9. A similar opening 51 isformed in the closure member 39 so that the air may be exhausted fromthe space between the walls 23` and 24 and the members 38 and 3 rlfheopenings 50 and 5l are sealed by the 'plugs 52 after the air has beenexhausted. A supporting member 53 is secured at 54 to the bottom member8.' This member 53 contacts with the bottom 9 and securely braces themember 8. The member 53 is lsuitably perforated 'at 55 so as to permitthe air to be exhausted from Vthe space between the .respective Wallsotthe jacket.

A. reinforcing band 56 embraces the wall 5 near the upper end thereof.This band has attachingplates 57 secured thereto and supported by' theplates are handles Eyes 59 and 50 are secured to the sections oi' theinsulating jacket and they are connected with each other by a seal Gl.lt will` be understood th/at this seal is applied after the inner vesselis placed in the jacket for shipment. f

To facilitate filling the inner vessel in a sanitary manner or to enableone to pour out its contents Without spillingr the same, l. provide theiunnel attachment GQ. This attachment includes an inner yglass funnel 63and an outer metal funnel (il. The inner funnel islprovided with anextcriorly threaded neck to which the interiorly threaded neck 6G totthe outer funnel (34C is engaged. ythe length ot' the neck 6G exceedsthaty of the neckt so that a threaded portion 67 of This the neck 66extends below the plane of the lower end of the neck 65. This portion 67may be engaged with the exteriorly threaded ncck of the inner vessel. asshown in Fig.' 4. From this construction it will be seen th'at thecontents of the inner vessel can be poured without the contents comingin contact with any metal parts, it being an essential object in acan ofthe characterdescribed for the reason that it has been found fromexperience that germs or foreign matter will adhere to metal parts andare frequently transferred from one vessel to the other in the pouringoperation. The insulating` material which is arranged between the Wallsof the insulatingjacket is provided solely for the purpose of preventingthe rapid absorption of heat should the outer wall of the jacket becomepunctured in transit.

I claimzl. In a heat insulated'can, an insulating jacket including innerand outer Walls, the

inner Walls beingextended above the plane of thel outer Walls, a steppedmember connectinpthe inner and outer walls together at their upper ends,an inner vessel embraced by the inner walls and having an eX- ternalshoulder occupying substantially the same general plane with the upperend of the said inner walls7 adjustable means on the stepped memberhaving portions extending;a Within the inner Walls and engaging theshoulder of the inner vessel, the said'connecting member 'spacing' theinner and outer walls from each other. a bottom for the outer walls, abottom for the inner Walls, means interposed between the first andsecond named bottoms tor spacing them from each other, and aV closuresection adjustable on the stepped member and having'a inner and outerwalls and provided with a horizontal flange which engages the innervessel engaging means when said closure section is closed upon the saidstepped member.

Q. .Tn a heat insulated can, an insulating jacket including' inner andouter walls, the inner walls beine' extended above the plane of theouter Walls, a stepped member connectinn the inner and outerwallstogether at their upper ends, an inner vessel embraced by thc inner allsand having an eX- tornal shoulder occupyingr substantially the samegeneral plane with the upper end of the said inner walls, mljustablomeans ou the stopped member havingr portions extending' Within the innerwalls and engaging thc shoulder of the inner vessel. the said steppedmember spacing the inner and outer walls from each other, a bottom forthe outer.

Walls, a bottom for the' inner Walls, means interposed between the firstand second named bottoms'for spacing them from each other. and a closuresection adjustable on the stepped member and having,- inner and outerinsulated walls provided with@ horizontal flange which engages the innervessel engaging means when said closure seetionis closed upon the saidstepped menilier, so

as to holcl vthe same against rotationfand means -for securing the saidclosure section to the' 'said jacket.

3. A heat insulated can 'comprising a denble Walled insulating'jacket,an inner vessel vremovably fitted in the jacket. and having a breastportion extending;r tlierealmve; a neck on the breast of the innervessel, :1 closure removably fitted to the neek, a elef sure removablyfitted to the jacket and l1a\' L ing a portion spaced from the closureof the inner vefssel so as to define an intervenn'nglr ln testimonywhewet lv nllix my signature in4 presence of two witnesses. i

LEONARD R. STEEL.

Witnesses JOHN l). Lnoro,

Roer. J. STEEL.

